Related Clues:

• The U.S. and Can. are in it
• Grp. headquartered in Brussels
• Western Hemisphere assn.
• Growing alliance
• W. Hemisphere assn.
• U.S. force in Europe
• Western defense org.
• Defense grp.
• Treaty grp.
• Successor to the Pan-American Union
• The U.S. is in it
• Defense grp. since 1949
• New World grp.
• Alliance acronym
• Gp. that suspended Cuba in 1962